var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
const cors = require('cors')
const session = require('express-session')

var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');

var app = express();

app.use(cors({
  // origin: 'http://localhost:9527',
  origin: (ctx, cb) => {
    cb(null, true)
  },
  // origin: ctx => {
  //   const whiteList = ['http://quanzhan.site', 'http://localhost:8081', 'http://localhost:9527']; //可跨域白名单
  //   let url = ctx.header.referer.substr(0, ctx.header.referer.length - 1); 
  //   if(whiteList.includes(url)){
  //     return url //注意，这里域名末尾不能带/，否则不成功，所以在之前我把/通过substr干掉了
  //   }
  //   return 'http://localhost:9527'
  // },
  credentials: true,
}))

app.use(session({
  secret: 'keyboard cat as8124as-1.a1k',
  resave: false,
  saveUninitialized: true,
  cookie: {
    sameSite: 'none',
    secure: true,
  }
}))

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');

app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

app.use('/', indexRouter);
app.use('/users', usersRouter);

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  next(createError(404));
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;
